MAH-MHT CET (PCM/PCB) entrance exam Question Bank Solutions

A body is moving along a circular track of radius 100 m with velocity 20 m/s. Its tangential acceleration is 3 m/s², then its resultant acceleration will be ______.

A particle executes the simple harmonic motion with an amplitude 'A'. The distance travelled by it in one periodic time is ______.

Kirchhoff's junction rule is a reflection of ____________.

The magnitude and direction of the current in the circuit shown will be ______

The real force 'F' acting on a particle of mass ' m' performing circular motion acts along the radius of circle 'r' and is directed towards the centre of circle. The square root of the magnitude of such force is (T = periodic time).

The instantaneous magnetic flux in a circuit is  `phi=4t^2-4t+1`. The total resistance of circuit is 15 Ω. At t = 2s, the induced current in circuit is ____________.

The centripetal force of a body moving in a circular path, if speed is made half and radius is made four times the original value, will ____________.

In the given circuit, the emf 'E' of the cell is ______.

An electron moves on a straight line path XY as shown. The abed is a coil adjacent to the path of electron. What will be the direction of current, if any, induced in the coil?

The electrical resistance of depletion layer is large because ____________.

The equation of state for 2g of oxygen at a pressure 'P' and temperature 'T', when occupying a volume 'V' will be ______.

A rigid body is rotating with angular velocity 'ω' about an axis of rotation. Let 'v' be the linear velocity of particle which is at perpendicular distance 'r' from the axis of rotation. Then the relation 'v = rω' implies that ______.

The potential difference (V_A - V_B) between the points A and B in the given figure is ______.

What determines the conventional direction of the product of current and resistance while applying the Kirchhoff's law?

Angular displacement (θ) of a flywheel varies with time as θ = at + bt² + ct³ then angular acceleration is given by ____________.

If a cyclist doubles his speed while negotiating a curve, how does the tendency to overturn vary? 

A junction diode of internal resistance 20 Ω is used for half-wave rectification. If the applied voltage has a peak value of 50 V and load resistance is 800 Ω, then d.c. value of current is ____________.

An engine requires 5 seconds to go from a speed of 600 r.p.m. to 1200 r.p.m. How many revolutions does it make in this period?

The maximum efficiency of full-wave rectifier is ____________.

A particle performs uniform circular motion in a horizontal plane. The radius of the circle is 10 cm. If the centripetal force F is kept constant but the angular velocity is halved, the new radius of the path will be ______.